Overview
The TDA8922C, produced by NXP USA Inc., is a high-efficiency Class D audio power amplifier. This device is designed to deliver high output power with minimal distortion and low quiescent currents. It is pin compatible with the TDA8950/20C and is available in both HSOP24 and DBS23P packages. The amplifier features advanced protection strategies, including overvoltage, overtemperature, and overcurrent protection, ensuring robust system performance and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Output Power | 2 x 75 W (with 6Ω load impedance) |
| Amplifier Class | Class D |
| Number of Channels | 2 (Stereo or Mono Bridge-Tied Load) |
| Supply Voltage Range | ±12.5 V to ±32.5 V |
| Operating Modes | Standby, Mute, Operating |
| Protection Features | Overvoltage Protection (OVP), Overtemperature Protection (OTP), Overcurrent Protection (OCP), Unbalance Protection (UBP) |
| Package Type | HSOP24, DBS23P |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- High output power and high efficiency, reducing heat dissipation and increasing system reliability.
- Low distortion and low quiescent currents, ensuring high-quality audio output.
- Advanced protection strategies including thermal foldback (TFB), overtemperature protection (OTP), overcurrent protection (OCP), and unbalance protection (UBP).
- Multiple operating modes: Standby, Mute, and Operating, controlled via the MODE pin.
- Support for various configurations: Stereo Single-Ended (SE) and Mono Bridge-Tied Load (BTL).
- Pop noise-free start-up with a recommended time constant of at least 350 ms for the transition between Mute and Operating modes.
Applications
- Audio systems requiring high power output and efficiency, such as home theaters, car audio systems, and professional audio equipment.
- Industrial audio applications where robustness and reliability are crucial.
- Consumer electronics that demand high-quality audio performance with minimal power consumption.
Q & A
- What is the typical output power of the TDA8922C?
The typical output power of the TDA8922C is 2 x 75 W with a speaker load impedance of 6Ω.
- What are the different operating modes of the TDA8922C?
The TDA8922C can operate in Standby, Mute, and Operating modes, controlled via the MODE pin.
- What protection features are included in the TDA8922C?
The TDA8922C includes overvoltage protection (OVP), overtemperature protection (OTP), overcurrent protection (OCP), and unbalance protection (UBP).
- How does the thermal protection work in the TDA8922C?
The thermal protection includes thermal foldback (TFB) which reduces the output power if the junction temperature exceeds a certain threshold, and overtemperature protection (OTP) which shuts down the device if the temperature continues to rise.
- What is the recommended time constant for the transition between Mute and Operating modes to ensure pop noise-free start-up?
The recommended time constant is at least 350 ms for the transition between Mute and Operating modes.
- What are the supported configurations for the TDA8922C?
The TDA8922C can be configured in Stereo Single-Ended (SE) and Mono Bridge-Tied Load (BTL) configurations.
- What is the supply voltage range for the TDA8922C?
The supply voltage range is from ±12.5 V to ±32.5 V.
- What are the package types available for the TDA8922C?
The TDA8922C is available in HSOP24 and DBS23P packages.
- What is the operating temperature range for the TDA8922C?
The operating temperature range is from -40°C to 85°C.
- How does the overcurrent protection (OCP) work in the TDA8922C?
The OCP limits the maximum output current and shuts down the amplifier if the current exceeds the OCP threshold, with an internal timer and capacitor discharge mechanism.
